Wastewater Mechanical Engineer – Onsite UK in Castletown

Career Opportunities: Mechanical Engineer - Southampton (524352)

Requisition ID524352-Posted09/09/2026-Infrastructure Products Group-Hydro International-Full Time-Engineering-United Kingdom

Country: United Kingdom
Req ID: 524352
Job Type: Full Time
Workplace Type: Onsite
Seniority Level: Associate

Hydro International, a CRH Company, is a leading global provider of advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management processes, increase operational performance and reduce environmental impact. With over 40 years of experience and a reputation for engineering excellence, businesses, and public bodies all over the world rely on our products, services and integrated solutions to reduce flood risk, improve water treatment and protect the environment from water pollution. We have a network of over 80 distribution partners and serve customers in more than 40 countries. As part of CRH Infrastructure Products, we are leading the water management industry with innovative, sustainable solutions and a safety-first mindset.

Job Title – Mechanical Engineer

Location – Southampton

About Us

Hydro International, a CRH Company, is a leading global provider of advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management processes, increase operational performance and reduce environmental impact. With over 40 years of experience and a reputation for engineering excellence, businesses, and public bodies all over the world rely on our products, services and integrated solutions to reduce flood risk, improve water treatment and protect the environment from water pollution. We have a network of over 80 distribution partners and serve customers in more than 40 countries. As part of CRH Infrastructure Products, we are leading the water management industry with innovative, sustainable solutions and a safety-first mindset.

The Mechanical Engineer will be working within Hydro International's UK Wastewater Services (UKWWS) team. We support water utility companies by improving sewage sites across the United Kingdom.

We are looking for an experienced/qualified Mechanical Engineer to join us at our Manningtree branch.

In this job you will…

• Install, commission, set up and test water filtration systems on sewage sites.
• Carry out site inspections and fault finding and compile survey reports for quotation purposes.
• Access and interpret technical instructions using mobile electronic equipment.
• Work at heights, in confined spaces and outside on sites connected with Wastewater (sewage).
• Work away from home on a regular basis, requiring overnight stays.
• Work in some of our workshops across the country on occasion.
• Work as a team with other staff and trades within the business.

About You

• Current Valid Driving License
• City & Guilds Qualified
• Served a recognised mechanical apprenticeship

Why work for us?

• Annual Discretionary Bonus
• Additional overnight/stay away payment
• 2 x Annual salary Life Cover
• Sick pay policy
• Minimum of 23 days holiday per annum + Bank Holidays
• DSE Eye Tests
• Mental Health First Aiders & Support programmes
• Training & Development

What Hydro International Offers You

A culture that values opportunity for growth, development, and internal promotion

Highly competitive salary package

Comprehensive secondary benefits

Significant contribution to your pension plan

Excellent opportunities to develop and progress with a global organization

Connect your future to CRH

CRH is an equal opportunity employer. We are committed to creating an inclusive work environment for all employees and actively encourage applications from all sectors of the community.

Benefits/perks listed above may vary depending on the nature of the employment with CRH and the country where you work.